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SKOUPÁ, M. -- OPAVSKÁ, T. -- LICHOVNÍKOVÁ, M. -- FOLTÝN, M. Effect of increased temperature at the beginning of incubation on day-old chick quality in broilers. In Animal Breeding 2020. Brno: Mendelova univerzita v Brně, 2020, p. 89--96. ISBN 978-80-7509-705-7.

Original name: Effect of increased temperature at the beginning of incubation on day-old chick quality in broilers
Czech name:
Written by (author): Ing. Markéta Skoupá
Ing. Tereza Opavská
doc. Ing. Martina Lichovníková, Ph.D.
Marian Foltýn
Department: Department of Animal Breeding
Kind of publication:
article in proceedings
Collection: Animal Breeding 2020
Nature of article: paper
Part number:
Starting page: 89
Up to page:
96
Number of pages:
8
UT code by Web of Science:
EID code by Scopus:
Original language: English
Description in original language:
The significance of conditions during incubation period for broiler chickens has been recognized to be critical due to the fact that broilers spend up to 40% of their total life inside the egg during incubation. Thus, anything that can optimize posthatch growth and development may have great scientific and practical interest. The present study was therefore conducted to elucidate the effects of increased temperature during first 36 hours of incubation on embryonic development, hatchability and day-old chick quality. The experiment was conducted using Ross 308 hatching eggs that had been stored for 4 days, broiler breeder's age was 55 weeks. Totally 1200 hatching eggs were used in 20 repetitions. The temperature in hatching machine at first 36 hours of incubation for control group (CG) was 100.8oF. For experimental group (EG) the temperature at first 36 hours of incubation was 102.5oF. There was no significant difference in fertility between the groups, however the hatchability was higher in CG (P<0.05). Hatchability of fertile eggs was 92.2% in CG and 90.4% in EG. There was not significant difference between CG and EG in early and middle stage embryonic mortality. But mortality in the last third of incubation was significantly higher (P<0.05) in EG. In CG the late mortality was 2.47%, in EG 4.17%. In average day-old chick weight neither yolk sac weight, percentage of yolk sac from the weight nor triiodothyronine (thyroid hormone T3) activity there was not significant difference between the groups. Temperature setting change in hatching machine at first 36 hours of incubation from standard 100.8oF to 102.5oF had negative impact on hatchability.
Description in English:
Description in Czech:
Year of submission:
2020
Year of transmission:
RIV identification number:
 
Entry made by:
Last change:
04/30/2020 07:16 (Markéta Hejčová, DiS.)

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Source specification:

Animal Breeding 2020. Brno: Mendelova univerzita v Brně, 2020. ISBN 978-80-7509-705-7.

Original name:
Animal Breeding 2020
English name:
Czech name:
Editor:
Kind of publication: conference proceedings
ISBN:
978-80-7509-705-7
Publisher: Mendelova univerzita v Brně
Place of publishing:
Brno
Form of publication:
electronic version (memory medium)
Issue and volume number:
Year of publication:
2020
Issue number:
Number of pages:
Entry:
Animal Breeding 2020
Original language:
Description in original language:
Description in English:
Description in Czech:
 
Entry made by:
Last change:
04/29/2020 14:55 (Markéta Hejčová, DiS.)

Evaluation of publication:

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Source specification:

Animal Breeding 2020. 2020, Brno.

Original name:
Animal Breeding 2020
English name:
Czech name:
Promoter:
Kind of publication:
holding a conference
Venue:
Brno
Organizer:
Country:
Time scope of event:
nationwide event
Conference type:
Abbreviation:
Order number:
Starting date :
End of study:
Held in year :
2020
Total number of participants:
Original language:
Description in original language:
Description in English:
Description in Czech:
Year of transmission:
RIV identification number:
 
Entry made by: Markéta Hejčová, DiS.
Last change:
04/29/2020 14:55 (Markéta Hejčová, DiS.)

Evaluation of publication:

123
4
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interesting
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123
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amateur
 
professional
        
theoretical
 
practical
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